Q18.9 is the authoritative medical code for Congenital malformation of face and neck, unspecified. This classification is used in medical billing and clinical recording to specify the clinical criteria for congenital malformation of face and neck, unspecified (ICD-10-CM Q18.9), ensuring healthcare documentation aligns with 2026 federal coding standards.
Billing Status: YES. This is a valid, specific, and billable ICD-10-CM reference.
Official Registry Overview & Definition
Congenital malformation of face and neck, unspecified is a billable ICD-10-CM diagnosis code Q18.9. Inclusion terms: Congenital anomaly NOS of face and neck. Excludes1 (not coded here): cleft lip and cleft palate Q35-Q37; conditions classified to Q67.0-Q67.4; congenital malformations of skull and face bones Q75.-; cyclopia Q87.0; dentofacial anomalies including malocclusion; malformation syndromes affecting facial appearance Q87.0; persistent thyroglossal duct Q89.2. Excludes2 (not included here): cleft lip and cleft palate Q35-Q37; congenital malformation of cervical spine (Q05.0, Q05.5, Q67.5, Q76.0-Q76.4); congenital malformation of larynx Q31.-; congenital malformation of lip NEC Q38.0; congenital malformation of nose Q30.-; congenital malformation of parathyroid gland Q89.2; congenital malformation of thyroid gland Q89.2.
Official Tabular Instructional Notes
Sequencing, inclusion, and exclusion notes published for Q18.9 in the official ICD-10-CM tabular list.
Inclusion Terms
Alternative terms the tabular list files under this code.
- Congenital anomaly NOS of face and neck
Excludes1 — Not Coded Here
Conditions that can never be reported with this code; the two are mutually exclusive.
- cleft lip and cleft palate Q35-Q37
- conditions classified to Q67.0-Q67.4
- congenital malformations of skull and face bones Q75.-
- cyclopia Q87.0
- dentofacial anomalies including malocclusion
- malformation syndromes affecting facial appearance Q87.0
- persistent thyroglossal duct Q89.2
Excludes2 — Not Included Here
Conditions not covered by this code, but which may be reported alongside it when both are present.
- cleft lip and cleft palate Q35-Q37
- congenital malformation of cervical spine (Q05.0, Q05.5, Q67.5, Q76.0-Q76.4)
- congenital malformation of larynx Q31.-
- congenital malformation of lip NEC Q38.0
- congenital malformation of nose Q30.-
- congenital malformation of parathyroid gland Q89.2
- congenital malformation of thyroid gland Q89.2
Frequently Asked Questions (FAQ) & Clinical Guidance
What can't be coded together with Q18.9?
Per official ICD-10-CM Excludes1 instructions, Q18.9 must not be reported together with: cleft lip and cleft palate (Q35-Q37); conditions classified to Q67.0-Q67.4; congenital malformations of skull and face bones (Q75.-); cyclopia (Q87.0).
Can Q18.9 be reported alongside related conditions?
Per official ICD-10-CM Excludes2 instructions, Q18.9 and the following are not considered part of each other and may both be reported when both conditions are present: cleft lip and cleft palate (Q35-Q37); congenital malformation of cervical spine (Q05.0, Q05.5, Q67.5, Q76.0-Q76.4); congenital malformation of larynx (Q31.-); congenital malformation of lip NEC (Q38.0).
What conditions are included under Q18.9?
Congenital malformation of face and neck, unspecified includes: Congenital anomaly NOS of face and neck.
Nearest Codes in This Family
Official ICD-10-CM classifications closest to Q18.9 in its code family, with their registry titles.
- Q18 — Other congenital malformations of face and neck
- Q18.0 — Sinus, fistula and cyst of branchial cleft
- Q18.1 — Preauricular sinus and cyst
- Q18.2 — Other branchial cleft malformations
- Q18.3 — Webbing of neck
- Q18.4 — Macrostomia
- Q18.5 — Microstomia
- Q18.6 — Macrocheilia
- Q18.7 — Microcheilia
- Q18.8 — Other specified congenital malformations of face and neck
Indexed Clinical Terms (8)
Clinical term phrases from the official ICD-10-CM Index to Diseases and Injuries that map to this code.
- Anomaly, anomalous (congenital) (unspecified type), cheek
- Anomaly, anomalous (congenital) (unspecified type), chin
- Anomaly, anomalous (congenital) (unspecified type), face
- Anomaly, anomalous (congenital) (unspecified type), neck (any part)
- Deformity, cheek (acquired), congenital
- Deformity, chin (acquired), congenital
- Deformity, face (acquired), congenital
- Deformity, neck (acquired), congenital